Question

why are the Himalayan rivers perennial​

Answer 1

Answer:

because they have water throughout the year.

Answer 2

Answer:

The Himalayan rivers are perennial rivers as they originate in snow covered Himalayan mountains. During summers, the snow melts and the rivers get continuous supply of water. On the contrary, the peninsular rivers depend mostly on rainfall for its supply of water and thus becomes dry during the summer season.